title: Neonatal necrotizing enterocolitis: a nine-year experience.
abstract: To gain an epidemiologic perspective on necrotizing enterocolitis (NEC), nine years' experience with 123 patients was reviewed. Mean gestational age was 31 weeks, and mean birth weight, 1,460 g; 7.3% were full-term and 10.5% were small for gestational age. Eighty infants had umbilical artery catheters, of which 50% were placed below L4-5. There was no identifiable risk factor in 11.4%; in half of these infants, NEC developed during an epidemic. Clustering of cases occurred in seven of the 108 months studied. Cases during epidemics had a lower incidence of respiratory distress syndrome. Average age at onset of NEC was 12 days; however the most common agd (mode) was 3 days, and in 13.8% onset was after the third week. On the survivors, 4% had recurrent disease one to 20 days after reinitiation of enteric feeding. The occurrence of NEC in low-risk patients and in older neonates raises serious questions about the proposed pathogenesis of NEC.
mesh_terms: D001724:Birth Weight; D002404:Catheterization; D004761:Enterocolitis, Pseudomembranous / Q000453:epidemiology* / Q000209:etiology / Q000628:therapy; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology* / Q000209:etiology / Q000628:therapy; D010288:Parenteral Nutrition; D012306:Risk